05000237/FIN-2011003-05
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Finding | |
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| Title | Inadequate Scoping of a Non-Safety-related Pump Into Maintenance Rule |
| Description | A finding of very low safety significance and associated NCV of 10 CFR Part 50.65(b)(2)(ii), Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, was identified by the inspectors for the licensees failure to adequately scope a non-safety-related component relied upon to mitigate an accident. Specifically, the licensee failed to include the non-safety-related screen refuse pumps, which are credited as a support component during a dam failure for the safety-related isolation condensers, as part of their maintenance effectiveness program. As a corrective action, the licensee initiated IR 1221421, to evaluate the need to include the screen refuse pumps into their maintenance rule program. The performance deficiency was determined to be more than minor because it adversely affected the availability, reliability, and capability of mitigating systems that respond to initiating events to prevent undesirable consequences (i.e., core damage.) The finding screened as of very low safety significance because it was a qualification deficiency confirmed not to result in loss of operability or functionality. Specifically, the licensee performed further review of related maintenance and provided reasonable assurance the screen refuse pumps had not experienced a complete loss of function. The inspectors determined the cause of this finding did not represent current licensee performance and no cross-cutting aspect was assigned. |
| Site: | Dresden  |
|---|---|
| Report | IR 05000237/2011003 Section 1R07 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.07 |
| Inspectors (proximate) | M Bielby M Ring T Go J Draper C Tilton J Corujo -Sandin M Munir R Winter A Dahbur D Melendez-Colon C Phillips C Moor |
| INPO aspect | |
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Finding - Dresden - IR 05000237/2011003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Dresden) @ 2011Q2
Self-Identified List (Dresden)
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